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    logan1992's Avatar
    logan1992 Posts: 4, Reputation: 1
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    #1

    Oct 13, 2011, 04:07 PM
    Please tell me step by step how to solve the following physics question.
    A 320 kg satellite experiences a gravitational force of 800 N. What is the radius of the satellite's orgit? (Earth's radius is 6,400 km)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 13, 2011, 10:50 PM
    Use the equation for gravitational force? This directly gives you the radius you need after some work:



    Substitute in the values that you've got. You should be given the universal gravitational constant G and the mass of the Earth (or the density and use the radius of the Earth to get an estimated mass). Then, solve for r. :)

    Be careful with the units though!
    logan1992's Avatar
    logan1992 Posts: 4, Reputation: 1
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    #3

    Oct 14, 2011, 12:44 PM
    Thank you.
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